2031230317 has 2 divisors, whose sum is σ = 2031230318. Its totient is φ = 2031230316.

The previous prime is 2031230309. The next prime is 2031230381. The reversal of 2031230317 is 7130321302.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1218638281 + 812592036 = 34909^2 + 28506^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031230317 - 2³ = 2031230309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2031230387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015615158 + 1015615159.

It is an arithmetic number, because the mean of its divisors is an integer number (1015615159).

Almost surely, 2^2031230317 is an apocalyptic number.

It is an amenable number.

2031230317 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031230317 is an equidigital number, since it uses as much as digits as its factorization.

2031230317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 2031230317 is about 45069.1725794916. The cubic root of 2031230317 is about 1266.4451640919.

Adding to 2031230317 its reverse (7130321302), we get a palindrome (9161551619).

The spelling of 2031230317 in words is "two billion, thirty-one million, two hundred thirty thousand, three hundred seventeen".